A007818 - cp's OEIS frontend

A007818 Maximal number of bonds joining n nodes in simple cubic lattice.

n	a(n)
1	0
2	1
3	2
4	4
5	5
6	7
7	9
8	12
9	13
10	15
11	17
12	20
13	21
14	23
15	25
16	28
17	30
18	33
19	34
20	36
21	38
22	41
23	43
24	46
25	48
26	51
27	54
28	55
29	57
30	59
31	62
32	64
33	67
34	69
35	72
36	75
37	76
38	78
39	80
40	83
41	85
42	88
43	90
44	93
45	96
46	98
47	101
48	104
49	105
50	107
51	109
52	112
53	114
54	117
55	119
56	122
57	125
58	127
59	130
60	133
61	135
62	138
63	141

[0, 1, 2, 4, 5, 7, 9, 12, 13, 15, 17, 20, 21, 23, 25, 28, 30, 33, 34, 36, 38, 41, 43, 46, 48, 51, 54, 55, 57, 59, 62, 64, 67, 69, 72, 75, 76, 78, 80, 83, 85, 88, 90, 93, 96, 98, 101, 104, 105, 107, 109, 112, 114, 117, 119, 122, 125, 127, 130, 133, 135, 138, 141]

cp's OEIS Frontend

A007818 Maximal number of bonds joining n nodes in simple cubic lattice.

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	4
5	5
6	7
7	9
8	12
9	13
10	15
11	17
12	20
13	21
14	23
15	25
16	28
17	30
18	33
19	34
20	36
21	38
22	41
23	43
24	46
25	48
26	51
27	54
28	55
29	57
30	59
31	62
32	64
33	67
34	69
35	72
36	75
37	76
38	78
39	80
40	83
41	85
42	88
43	90
44	93
45	96
46	98
47	101
48	104
49	105
50	107
51	109
52	112
53	114
54	117
55	119
56	122
57	125
58	127
59	130
60	133
61	135
62	138
63	141

n	a(n)
1	0
2	1
3	2
4	4
5	5
6	7
7	9
8	12
9	13
10	15
11	17
12	20
13	21
14	23
15	25
16	28
17	30
18	33
19	34
20	36
21	38
22	41
23	43
24	46
25	48
26	51
27	54
28	55
29	57
30	59
31	62
32	64
33	67
34	69
35	72
36	75
37	76
38	78
39	80
40	83
41	85
42	88
43	90
44	93
45	96
46	98
47	101
48	104
49	105
50	107
51	109
52	112
53	114
54	117
55	119
56	122
57	125
58	127
59	130
60	133
61	135
62	138
63	141

n	a(n)
1	0
2	1
3	2
4	4
5	5
6	7
7	9
8	12
9	13
10	15
11	17
12	20
13	21
14	23
15	25
16	28
17	30
18	33
19	34
20	36
21	38
22	41
23	43
24	46
25	48
26	51
27	54
28	55
29	57
30	59
31	62
32	64
33	67
34	69
35	72
36	75
37	76
38	78
39	80
40	83
41	85
42	88
43	90
44	93
45	96
46	98
47	101
48	104
49	105
50	107
51	109
52	112
53	114
54	117
55	119
56	122
57	125
58	127
59	130
60	133
61	135
62	138
63	141